Explanation

The tundra is a cold, treeless biome, characterized by permafrost and minimal vegetation.

It has low temperatures and short growing seasons, which limit the growth of trees.

Explanation

In predation, one animal kills and feeds on another for nourishment.

This relationship benefits the predator while harming the prey.

Explanation

Centrioles play a crucial role in organizing the spindle fibers during cell division, specifically in mitosis and meiosis.

They help in the formation of the spindle apparatus, ensuring proper chromosome separation.

Explanation

Bacteria are the most abundant living organisms on Earth, found in nearly every environment, from the deep ocean to the human body.

Their sheer numbers and ability to thrive in various conditions make them the most numerous form of life on the planet.

Explanation

Chlorophyll is the green pigment responsible for photosynthesis, and it is primarily contained in the mesophyll cells of plant leaves.

These cells are located in the middle layer of the leaf.

They are the main site for photosynthesis.

Explanation

The glottis is the opening of the trachea.

It is located in the larynx.

It plays a key role in breathing, sound production, and preventing food from entering the windpipe.

Explanation

Humans have approximately 10,000 taste buds inside the mouth.

These taste buds are responsible for detecting different tastes such as sweet, salty, sour, bitter, and umami.

Explanation

The limbic system is the part of the brain primarily involved in processing emotions and memory.

It includes structures like the amygdala and hippocampus that regulate emotional responses.

Explanation

Cytoplasm is a thick, viscous liquid that fills the space between the nucleus and the cell membrane.

It holds and supports the cell’s organelles.

It is the site of many cellular processes.

Explanation

Pakistan is home to around 525 species of fish, found in both freshwater and marine ecosystems.

These include both native and introduced species across rivers, lakes, and coastal waters.